package utils

import (
	"os"

	"github.com/spf13/viper"
)

type Config struct {
	Server struct {
		Port string `yaml:"port"`
		Mode string `yaml:"mode"`
	} `yaml:"server"`
	Database DatabaseConfig `yaml:"database"`
	JWT      JWTConfig      `yaml:"jwt"`
	Email    EmailConfig    `yaml:"email"`
	Upload   UploadConfig   `yaml:"upload"`
	Site     SiteConfig     `yaml:"site"`
	Security SecurityConfig `yaml:"security"`
}

type DatabaseConfig struct {
	Path string
}

type JWTConfig struct {
	Secret string
	Expire string
}

type EmailConfig struct {
	Host     string
	Port     int
	Username string
	Password string
}

type UploadConfig struct {
	Path string
}

type SiteConfig struct {
	Title       string
	Description string
	BaseURL     string
	Logo        string
	Favicon     string
	Copyright   string
	ICP         string
}

type SecurityConfig struct {
	EncryptKey string
}

func LoadConfig() (*Config, error) {
	viper.SetConfigName("config")
	viper.SetConfigType("yaml")
	viper.AddConfigPath("./config")

	// 读取环境变量
	viper.AutomaticEnv()

	if err := viper.ReadInConfig(); err != nil {
		return nil, err
	}

	config := &Config{}
	if err := viper.Unmarshal(config); err != nil {
		return nil, err
	}

	// 环境变量优先
	if port := os.Getenv("SERVER_PORT"); port != "" {
		config.Server.Port = port
	}

	return config, nil
}